|
|
Test Sockets and Contactors
Test Sockets and Contactors Overview
Liberty Research has been designing and manufacturing Test -Burn in Sockets since 1989.
Test Sockets selection can be confusing because of the number of choices for contact schemes. Socket Performance is defined by the user. It can be cycle lifetime, time between cleaning, contact compliance, thermal or electrical – DC resistance or Signal and Power Integrity performance. We at Liberty Research offer 3 contact technologies; Elastomers, Pogo Pins, Barrel Less Pogo Pins.
In any configuration we can usually match existing socket pin performance and socket footprints.
Pogo Pin & Barrel-Less Pin Sockets
Typical Specs for Barell Less Pin for BGA/LGA
| Typical Pitch |
MM Length |
Pin Travel |
Cres |
-1db BWidth |
G/F |
| 0.4mm |
1.97 |
0.77 |
<0.1 |
>10GHz |
20 |
| 0.5mm |
2.54 |
1.0 |
<0.5 |
>10GHz |
25 |
| 0.8mm |
2.89 |
1.1 |
<0.5 |
>10GHz |
30 |
| 1.0mm |
3.3 |
0.9 |
<0.5 |
>10GHz |
30 |
Why Choose Barrell Less Pins? PRICE
Barrel Less Pins have all the same mechanical advantages as pogo pins plus a few advantages of their own. They are easily customizable for specific applications such as Probe Card to Tester Board paths that need low force like 10 grams while also providing 0.5mm of travel.
For detailed specs for your application, please contact us at: nick@liberty-research.com
|
Quick-Turn Molded Test- Burn In Sockets
We provide added VALUE with our injection molded socket Shells, which eliminates the extra cost of machining. The socket uses reliable Pogo Pin contacts for QFN, CSP, small BGA, WLCSP and other small form factor DUTs.
Elastomer Sockets
Elastomers or PCRs tend to be an excellent choice for applications where extremely low parasitics are required, such as in certain RF or very high Digital Data Rates. Electrical performance is virtually unmatched due primarily the short contact length of < 1mm,. Extra caution needs to be given to DUT socket application because of the fact that contact compliance is usually limited to 0.3mm or less. Any of our elastomer sockets are excellent for hand test, but only certain designs are good for full production test in a robotic handler.  |
